../ pdb_000021pa_xyz-ext-atom_v1-0.xml.gz 23-Oct-2026 15:26 423K pdb_000021pa_xyz-no-atom_v1-0.xml.gz 23-Oct-2026 15:26 62K pdb_000021pa_xyz_v1-0.cif.gz 23-Oct-2026 15:26 470K pdb_000021pa_xyz_v1-0.xml.gz 23-Oct-2026 15:26 602K